Rainx 81199200 Anti Fog Repellent, 200ml

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The same process was then used on the other windows in the car, as well as the rear view mirror. On the passenger window, I applied two layers of Anti Fog since this will increase the longevity of it. Results In tests conducted by an American University, better visibility improved drivers’ responses up to a full second or more - helping drivers make better decisions on the road. Apply with a dry cloth and wipe the Rain-X Rain Repellent in a circular, overlapping motion; once you’ve allowed the product to dry, re-apply again and, once the final coat is dry, remove the final layer with a dry cloth or a sprinkling of water. I’m always a bit dubious about the claims some products make. One thing that stood out with Anti Fog though is that it doesn’t claim to completely eradicate any steaming up of the windows. For the windscreen, I purposely only treated sections of it as a comparison to the non treated sections, and it worked exceptionally well. On the side windows, there were a few small areas on the drivers side that did start to steam up, although it took quite a long time for this to happen. I’m chalking this up to there not being enough of the Anti Fog on the microfibre cloth. For that reason, I would recommend going over with a second layer to ensure that there is even coverage.

Installation Video

As with any product that is to be applied as a coating, the glass needs to be perfectly clean. You could use vinegar and water in a spray bottle and it’ll do a great job. I personally used Autoglym Fast Glass to clean the windows, but the choice is yours. As long as it’s a product that will not leave a film or a coating on the glass afterwards.